A rectangular coil, with corners labeled ABCD, of length L and width w is placed

Question

A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field
B as shown in the figure. If there is a current I
flowing through this coil, what is the direction
of the force acting on section AB of this coil?
A) perpendicular to and into the page
B) perpendicular to and out of the page
C) in the direction of the magnetic field
D) in the opposite direction of the magnetic field
E) in the direction of the current

Answer: A

Can someone explain why the answer is A?

A rectangular coil, with corners labeled ABCD, of length L and width w is placed in a magnetic field B as shown in the figure. If there is a current I flowing through this coil, what is the direction of the force acting on section AB of this coil? A) perpendicular to and into the page B) perpendicular to and out of the page C) in the direction of the magnetic field D) in the opposite direction of the magnetic field E) in the direction of the current Answer: A Can someone explain why the answer is A?

Explanation / Answer

Here ,

the current flowing in AB is upwards

and magnetic field is from north pole to south

therefore ,

Magnetic field is pointing to the Right

Now ,

as F = B X IL

Force is Into the Page

A) perpendicular to and into the page

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